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Solifenacin

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Solifenacin (Solifenacin Succinate) is an antispasmodic of the urinary tract used to treat symptoms of an overactive bladder, such as urgency and frequency. It works by relaxing the bladder muscles, which helps improve control and reduces the incidence of involuntary leakage in adult patients.


Availability
In Stock
Delivery Time
Airmail (14-21 days) | EMS trackable (5-9 days)
Product is shipped in a fully discreet envelope with no content disclosure, including all required documentation inside

Product Sheet

Active Ingredient(s)
Solifenacin Succinate
Reference Brand
Vesicare
Product Form
Tablet, Oral suspension
Regulatory Classification
Rx
Primary Category
Bladder Control
Product Category
Genito-urinary system, Bladder antispasmodic, Anticholinergic
Pharmacological Class
Muscarinic receptor antagonists
Manufacturer Description
A medication used to treat symptoms of an overactive bladder, such as frequent or urgent urination and leakage.
Mechanism of Action
Solifenacin works by relaxing the muscles of the bladder wall. This helps to increase the amount of urine the bladder can hold and reduces the sudden, urgent need to pass urine by blocking certain nerve impulses.
Route of Administration
Oral
Onset Time
Within 1 week
Duration
24 hours
Contraindications
Urinary retention, Severe gastrointestinal conditions, Myasthenia gravis, Narrow-angle glaucoma, Severe liver disease
Severe Adverse Events
Severe allergic reactions, Swelling of the face or throat, Inability to pass urine, Confusion, Hallucinations
Common Side Effects
Dry mouth, Blurred vision, Dry eyes
Uncommon Side Effects
Constipation, Nausea, Indigestion, Abdominal pain
Drug Interactions
Ketoconazole, Ritonavir, Other anticholinergic medicines
Pregnancy Safety Warnings
Consult a doctor; use only if the benefits outweigh the risks.
Age Restrictions
Not recommended for children
Storage Guidelines
Store at room temperature in the original packaging.
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Solifenacin FAQ

Can I travel with solifenacin and pass through airport security?

Yes. Solifenacin pills are legal prescription medicines in the UK. Keep them in their original labelled container, carry a copy of the prescription, and declare them if asked by security personnel.

What does the tablet look like, and are there imprint codes?

Solifenacin tablets are typically round, white to off-white, and may carry an imprint such as “5 MG” or “10 MG” followed by the manufacturer’s logo. Imprint details can vary between licensed brands.

Is solifenacin tested in sport drug screens?

Solifenacin is not listed on the World Anti-Doping Agency (WADA) prohibited list, so it is generally permitted for athletes. However, athletes should confirm with their governing body, especially if competing internationally.

Can solifenacin cause memory problems in older adults?

Anticholinergic drugs can affect cognition, particularly in the elderly. While solifenacin’s selectivity for M3 receptors reduces central nervous system penetration, clinicians often monitor older patients for any signs of confusion or memory decline.

How does solifenacin compare with mirabegron for OAB?

Both drugs treat OAB, but they work via different mechanisms: solifenacin is an antimuscarinic, whereas mirabegron is a β3-adrenoceptor agonist. Choice depends on individual tolerance, side-effect profile, and comorbid conditions.

What should I do if I miss a dose while on a 10 mg regimen?

Take the next scheduled dose at the regular time. Do not double the dose to make up for the missed one, as this can increase the risk of anticholinergic side effects.

Are there any dietary restrictions while taking solifenacin?

No specific foods need to be avoided. However, excessive caffeine may exacerbate bladder urgency, so moderation is advisable.

How long does it take to notice improvement in bladder symptoms?

Patients often report symptom relief within 1-2 weeks, but the full therapeutic effect may take up to 4 weeks. Consistent daily dosing is important for optimal benefit.

Can solifenacin be used in combination with pelvic floor physiotherapy?

Yes. Combining pharmacologic treatment with behavioural therapies such as pelvic floor exercises often yields better symptom control than either approach alone.

What are the cost considerations for solifenacin in the UK?

Solifenacin is a prescription-only medicine and may be available as a branded product (e.g., Vesicare) or as a generic. NHS prescribing policies and local pharmacy pricing determine the patient’s out-of-pocket cost. Generic versions are typically less expensive than the branded formulation.

Solifenacin: What Is It and How Does It Work?

Solifenacin is a prescription-only medication that contains solifenacin succinate as its active component. It belongs to the bladder and urinary therapeutic class and is available in pill form at strengths of 5 mg and 10 mg. In the United Kingdom, solifenacin is regulated by the Medicines and Healthcare products Regulatory Agency (MHRA) and is prescribed for the treatment of over-active bladder (OAB) symptoms such as urgency, frequency, and urge urinary incontinence in adults.

How Solifenacin Works in the Body

Solifenacin is an antimuscarinic (anticholinergic) agent that selectively blocks the muscarinic M3 receptors located in the detrusor muscle of the bladder. By inhibiting these receptors, solifenacin reduces involuntary bladder contractions, leading to:

  • Decreased urgency to void
  • Reduced frequency of urination
  • Improved bladder capacity
  • Less urge incontinence

The drug is taken orally, is well absorbed from the gastrointestinal tract, and reaches peak plasma concentrations within 3-5 hours. It is extensively metabolised by the liver, primarily via the cytochrome P450 3A4 (CYP3A4) pathway, and is excreted mainly in the urine and faeces. The pharmacological effect can last for 24 hours, allowing once-daily dosing.

Conditions Treated by Solifenacin

Solifenacin is approved in the UK for the management of over-active bladder in adult patients when symptoms are not adequately controlled by behavioural therapy alone. The medication is indicated for:

  • Urgency (a sudden, compelling desire to void)
  • Frequency (voiding more than eight times in 24 hours)
  • Urgent urinary incontinence (involuntary loss of urine associated with urgency)

It is not intended for patients with urinary retention, severe bladder outlet obstruction, or neurogenic bladder disorders where the underlying cause requires a different therapeutic approach.

Patient Suitability and Contra-Indications

Who Should Use Solifenacin?

  • Adults with clinically diagnosed OAB who have an inadequate response to non-pharmacologic measures.
  • Patients who can tolerate anticholinergic effects and have no contraindicating medical conditions.

Absolute Contra-Indications

  • Known hypersensitivity to solifenacin succinate or any excipients in the tablet.
  • Urinary retention or significant bladder outflow obstruction.
  • Severe uncontrolled narrow-angle glaucoma.
  • Severe hepatic impairment (Child-Pugh class C).

Relative Contra-Indications

  • Moderate renal impairment (creatinine clearance 30-50 mL/min); dose may need adjustment.
  • Moderate hepatic impairment (Child-Pugh class B); consider a lower starting dose.
  • Pregnancy (Category C): use only if the potential benefit justifies the risk.
  • Lactation: the drug is excreted in breast milk; caution is advised.

Special Populations

  • Elderly patients may be more sensitive to anticholinergic side effects; start with the lower 5 mg dose.
  • Patients with a history of dry mouth, constipation, or blurred vision should be monitored closely.

Safety Profile: Side Effects and Interactions

Common Side Effects

  • Dry mouth (frequently reported)
  • Constipation
  • Blurred vision
  • Urinary retention (especially at higher doses)

These effects are usually mild to moderate and often improve with continued therapy or dose adjustment.

Serious Adverse Events

  • Acute urinary retention requiring catheterisation
  • Severe constipation leading to bowel obstruction
  • Increased intra-ocular pressure (risk of glaucoma exacerbation)
  • Allergic reactions such as rash, itching, or angio-edema

If any of these occur, medical attention should be sought promptly.

Drug Interactions

  • CYP3A4 inhibitors (e.g., clarithromycin, itraconazole, ketoconazole, ritonavir) can raise solifenacin plasma levels and increase anticholinergic side effects.
  • P-glycoprotein (P-gp) inhibitors (e.g., amiodarone, quinidine) may also elevate concentrations.
  • Concomitant use with other anticholinergic agents (e.g., antihistamines, tricyclic antidepressants) may intensify dryness, constipation, and cognitive effects.

Patients should provide a full medication list-including over-the-counter drugs and herbal supplements-to their prescriber.

Food and Lifestyle Interactions

  • Solifenacin can be taken with or without food; however, taking it with a full glass of water may reduce the risk of oesophageal irritation.
  • Alcohol does not have a direct interaction but may exacerbate dizziness or dry mouth.
  • Driving or operating machinery may be affected if dizziness or visual disturbances develop; caution is advised until individual tolerance is known.

How to Take Solifenacin

  • Standard dosing: Start with 5 mg once daily. If the therapeutic response is insufficient and side effects are tolerable, the dose may be increased to 10 mg once daily.
  • Renal impairment: For patients with a creatinine clearance < 30 mL/min, solifenacin is generally not recommended.
  • Hepatic impairment: In Child-Pugh class B, a reduced dose (5 mg) is advised; avoid use in class C.
  • Administration: Swallow the tablet whole with water; do not crush or chew.
  • Missed dose: Take the next scheduled dose; do not double the dose.
  • Overdose: Symptoms may include severe dry mouth, flushing, tachycardia, urinary retention, and confusion. Management is supportive; activated charcoal can be considered if ingestion is recent. Seek emergency care immediately.
  • Discontinuation: Solifenacin can be stopped abruptly. No tapering is required, but patients should be monitored for recurrence of OAB symptoms.

Monitoring and Follow-Up

  • Baseline assessment: Evaluate urinary symptoms, bladder capacity, and rule out retention before starting therapy.
  • Renal and hepatic function: Check periodically in patients with known impairment.
  • Eye examination: Patients with glaucoma risk should have intra-ocular pressure monitored.
  • Symptom review: Follow-up after 4-6 weeks to assess efficacy and tolerability; adjust dose if needed.

Storage and Handling

  • Store tablets at room temperature (below 30 °C), protected from moisture and direct sunlight.
  • Keep the medication out of reach of children.
  • Do not use tablets after the expiry date printed on the pack; discard appropriately according to local pharmacy guidelines.

Medication-Specific Glossary

Antimuscarinic
A drug that blocks muscarinic acetylcholine receptors, reducing involuntary smooth-muscle contractions such as those in the bladder.
M3 Receptor
A subtype of muscarinic receptor predominant in the detrusor muscle; its inhibition decreases bladder overactivity.
Urinary Retention
An inability to empty the bladder fully, which can lead to discomfort, infection, or kidney problems.

Medical Disclaimer

This article provides educational information about solifenacin and is not a substitute for professional medical advice. Treatment decisions, including the use of solifenacin for unapproved indications, must be made under the guidance of a qualified healthcare provider. The content is intended for informational purposes and does not constitute medical recommendations. Always consult a physician before starting, stopping, or changing any medication regimen.

Information for Solifenacin is sourced from established medical standards and updated frequently. It is provided for general guidance and should be confirmed with a healthcare professional before use.
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